In the US, who typically names the residential streets?
If the street is built with public funds the local government (Mayor, City Council, whatever) will be responsible for naming it.
If the street is built with private funds it's up to that developer to name it.
Before the wide spread of high speed internet, what was the status of pirated/bootlegged CD-DVD of Music, Movies, Video games etc.?
So, the first thing I'll say, is that high speed Internet isn't everywhere yet. There are plenty of places in the US that are stuck with DSL, dial-up, or satellite Internet access.
As for your question... Bootlegging music/video/games never really took off in the US the way it has in some other countries. It happened, sure. But it was more along the lines of sharing something you bought with your friends and family. Not actually selling it for profit.
I don't think I've ever seen a bootleg store like you might see in some other countries.
How common is it for people to hide some of their income from IRS?
Common-ish...
Your paycheck is almost-certainly already being reported to the IRS. But if you earn tips, they probably don't get reported.
There's also plenty of people who do things like lawncare or house cleaning who don't necessarily report their full income.
And then, of course, you've got the wealthy folks with their tax shelters and crafty accountants.
Can you basically tell me major differences between Pizza hut , Papa John's and Dominoes?
They're all basically fast-food pizza. None of them are that amazing, but they're cheap and predictable, which can be good.
There's almost-certainly some local option that's got better pizza available. You'll probably have to pay more for it. They might not deliver - or, if they do, delivery times might be a bit long.
But if you're traveling/visiting, and don't know the local options, the big chains are typically a safe option.
Is it common for teenagers to drive and use cars before their legal age for driving license?
Not really... It happens - kids will sometimes take their parents' car out for a joyride without permission... But it isn't really a common/accepted thing. You won't see some 12-year-old driving to school or anything like that.
Many states, however, offer some kind of "hardship" or "rural" driver's license to kids who aren't quite of legal age yet. I grew up in a fairly rural chunk of Minnesota and we had plenty of 15-year-olds driving around with real, genuine driver's licenses.